Linear programming: Trouble setting up the problem

I'm having trouble setting this problem up. I know (or think) it is a minimization problem with 3 constraints, but I can't seem to figure what I'm minimizing. My initial thought was that it was 1 for both L(ousiana Gas) and T(rimex) because it's per dollar, but that doesn't seem right. I've provided photos below (it was on two pages).

As you can see from my writing on the page those are what I think the constraints are, but I'm not entirely sure.